In-situ stress measurements were carried out with the help of the small borehole hydraulic fracturing test unit in 10 test sites respectively belonging to 3 coal mines in Yitai coal mining area.The test results show that the coal mining area belongs to the low stress zone,the tectonic stress...
Related to coal mine:canary in a coal mine ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1. coal mine- a mine where coal is dug from the ground coalpit colliery,pit- a workplace consisting of a coal mine plus all the buildings and equipment connected with it ...
Premangshu Chakrabarty, in Modern Cartography Series, 2021 9.2 The study area The coal mines of the study area (Fig. 9.1) could be geologically categorized under the Gondwana system which comprises sedimentary rock formations of the Paleozoic to Mesozoic Era. The Lower Gondwana system (...
[23] proposed the use of native colonizer shrubs (Genista florida and Cytisus scoparius) as nurse plants to enhance Quercus petraea and Quercus pyrenaica reintroduction in reclaimed open-cast coalmines in Northern Spain. The preceding research provides insight into restoring mine-degraded lands and ...
A must-see if you’re in the area Aug 2021 • Friends The mine tour with Don was one of the highlights of our week long vacation. Being from New Orleans, I really knew nothing about coal mines. Being able to ride in a coal cart and tour a very ...
Therefore, research on coal mass permeability associated with coal damage is critical to the investigation on gas outburst hazard and gas extraction in underground coal mines (Jiang et al., 2010; Palmer and Mansoori, 1996). Coal permeability undergoes dynamic changes during gas drainage from coal ...
The benefits of coal mining are vital to the life its part in nation building in Australia, and in developing countries, of rural and regional Australia, where most mines are located. through energy poverty alleviation. The coal industry is a major export earner, contributing directly to the ...
KUNMING, July 30 (Xinhua) -- Coal mines may have brought environmental blues in China, but in the southwestern province of Yunnan, the exploited mines have been transformed into a gold mine of an unexpected industry: mango trees. When Sun Shaohua was 16, he started mining coal with fellow...
On the relation between interlayer glide caused by coal extraction and the shaft rupture occurring in coal mines in Huanghuai area... 王建军,骆念海,白振明 - 《岩石力学与工程学报》 被引量: 19发表: 2003年 开采引起的层间滑动与黄淮地区煤矿井筒破裂关系研究 LUO L H, BAI Z M. On the relation...
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